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<div id="overview"><a href="../../../../../../../api/org/jboss/netty/handler/codec/serialization/CompactObjectInputStream.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.codec.serialization;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> java.io.EOFException;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.io.InputStream;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.io.ObjectInputStream;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.io.ObjectStreamClass;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.io.StreamCorruptedException;
<a class="jxr_linenumber" name="24" href="#24">24</a>  
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/serialization/CompactObjectInputStream.html">CompactObjectInputStream</a> <strong class="jxr_keyword">extends</strong> ObjectInputStream {
<a class="jxr_linenumber" name="26" href="#26">26</a>  
<a class="jxr_linenumber" name="27" href="#27">27</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/handler/codec/serialization/ClassResolver.html">ClassResolver</a> classResolver;
<a class="jxr_linenumber" name="28" href="#28">28</a>  
<a class="jxr_linenumber" name="29" href="#29">29</a>      <a href="../../../../../../org/jboss/netty/handler/codec/serialization/CompactObjectInputStream.html">CompactObjectInputStream</a>(InputStream in, <a href="../../../../../../org/jboss/netty/handler/codec/serialization/ClassResolver.html">ClassResolver</a> classResolver) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="30" href="#30">30</a>          <strong class="jxr_keyword">super</strong>(in);
<a class="jxr_linenumber" name="31" href="#31">31</a>          <strong class="jxr_keyword">if</strong> (classResolver == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="32" href="#32">32</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"classResolver"</span>);
<a class="jxr_linenumber" name="33" href="#33">33</a>          }
<a class="jxr_linenumber" name="34" href="#34">34</a>          <strong class="jxr_keyword">this</strong>.classResolver = classResolver;
<a class="jxr_linenumber" name="35" href="#35">35</a>      }
<a class="jxr_linenumber" name="36" href="#36">36</a>  
<a class="jxr_linenumber" name="37" href="#37">37</a>      @Override
<a class="jxr_linenumber" name="38" href="#38">38</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> readStreamHeader() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="39" href="#39">39</a>          <strong class="jxr_keyword">int</strong> version = readByte() &amp; 0xFF;
<a class="jxr_linenumber" name="40" href="#40">40</a>          <strong class="jxr_keyword">if</strong> (version != STREAM_VERSION) {
<a class="jxr_linenumber" name="41" href="#41">41</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> StreamCorruptedException(
<a class="jxr_linenumber" name="42" href="#42">42</a>                      <span class="jxr_string">"Unsupported version: "</span> + version);
<a class="jxr_linenumber" name="43" href="#43">43</a>          }
<a class="jxr_linenumber" name="44" href="#44">44</a>      }
<a class="jxr_linenumber" name="45" href="#45">45</a>  
<a class="jxr_linenumber" name="46" href="#46">46</a>      @Override
<a class="jxr_linenumber" name="47" href="#47">47</a>      <strong class="jxr_keyword">protected</strong> ObjectStreamClass readClassDescriptor()
<a class="jxr_linenumber" name="48" href="#48">48</a>              <strong class="jxr_keyword">throws</strong> IOException, ClassNotFoundException {
<a class="jxr_linenumber" name="49" href="#49">49</a>          <strong class="jxr_keyword">int</strong> type = read();
<a class="jxr_linenumber" name="50" href="#50">50</a>          <strong class="jxr_keyword">if</strong> (type &lt; 0) {
<a class="jxr_linenumber" name="51" href="#51">51</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> EOFException();
<a class="jxr_linenumber" name="52" href="#52">52</a>          }
<a class="jxr_linenumber" name="53" href="#53">53</a>          <strong class="jxr_keyword">switch</strong> (type) {
<a class="jxr_linenumber" name="54" href="#54">54</a>          <strong class="jxr_keyword">case</strong> CompactObjectOutputStream.TYPE_FAT_DESCRIPTOR:
<a class="jxr_linenumber" name="55" href="#55">55</a>              <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">super</strong>.readClassDescriptor();
<a class="jxr_linenumber" name="56" href="#56">56</a>          <strong class="jxr_keyword">case</strong> CompactObjectOutputStream.TYPE_THIN_DESCRIPTOR:
<a class="jxr_linenumber" name="57" href="#57">57</a>              String className = readUTF();
<a class="jxr_linenumber" name="58" href="#58">58</a>              Class&lt;?&gt; clazz = classResolver.resolve(className);
<a class="jxr_linenumber" name="59" href="#59">59</a>              ObjectStreamClass streamClass = ObjectStreamClass.lookup(clazz);
<a class="jxr_linenumber" name="60" href="#60">60</a>              <strong class="jxr_keyword">if</strong> (streamClass == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="61" href="#61">61</a>                  <em class="jxr_comment">// If streamClass is null its very likely that we had an old netty version that was writing an</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>                  <em class="jxr_comment">// interface with a thin descriptor. Fall back to use ObjectStreamClazz.lookupAny(..) to resolve</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>                  <em class="jxr_comment">// it.</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>                  <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>                  <em class="jxr_comment">// This will only work on java6+ but if we hit this line its very likely that a user is upgrading</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>                  <em class="jxr_comment">// from netty 3.2.x which was using the method before and so use java6+.</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>                  <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>                  <em class="jxr_comment">// See https://github.com/netty/netty/commit/6c2eba79d70a532822a0e38092faa9783d90906b</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>                  streamClass = ObjectStreamClass.lookupAny(clazz);
<a class="jxr_linenumber" name="70" href="#70">70</a>              }
<a class="jxr_linenumber" name="71" href="#71">71</a>              <strong class="jxr_keyword">return</strong> streamClass;
<a class="jxr_linenumber" name="72" href="#72">72</a>          <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="73" href="#73">73</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> StreamCorruptedException(
<a class="jxr_linenumber" name="74" href="#74">74</a>                      <span class="jxr_string">"Unexpected class descriptor type: "</span> + type);
<a class="jxr_linenumber" name="75" href="#75">75</a>          }
<a class="jxr_linenumber" name="76" href="#76">76</a>      }
<a class="jxr_linenumber" name="77" href="#77">77</a>  
<a class="jxr_linenumber" name="78" href="#78">78</a>      @Override
<a class="jxr_linenumber" name="79" href="#79">79</a>      <strong class="jxr_keyword">protected</strong> Class&lt;?&gt; resolveClass(ObjectStreamClass desc) <strong class="jxr_keyword">throws</strong> IOException, ClassNotFoundException {
<a class="jxr_linenumber" name="80" href="#80">80</a>          Class&lt;?&gt; clazz;
<a class="jxr_linenumber" name="81" href="#81">81</a>          <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="82" href="#82">82</a>              clazz = classResolver.resolve(desc.getName());
<a class="jxr_linenumber" name="83" href="#83">83</a>          } <strong class="jxr_keyword">catch</strong> (ClassNotFoundException ex) {
<a class="jxr_linenumber" name="84" href="#84">84</a>              clazz = <strong class="jxr_keyword">super</strong>.resolveClass(desc);
<a class="jxr_linenumber" name="85" href="#85">85</a>          }
<a class="jxr_linenumber" name="86" href="#86">86</a>  
<a class="jxr_linenumber" name="87" href="#87">87</a>          <strong class="jxr_keyword">return</strong> clazz;
<a class="jxr_linenumber" name="88" href="#88">88</a>      }
<a class="jxr_linenumber" name="89" href="#89">89</a>  
<a class="jxr_linenumber" name="90" href="#90">90</a>  }
</pre>
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